Affiliation: | a Department of Pharmacognosy, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Tsushima, Okayama 700-8530, Japan b School of Pharmacy, Shujitsu University, Nishigawara, Okayama 703-8516, Japan c Matsuyama University, Bunkyo-cho, Matsuyama 790-8578, Japan |